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| Patents for Almon B. Calkins | |||||
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| Number | Date | Patentee | Title | Type | |
| 427,044 | May 06, 1890 | A.B. Calkins | Steam Engine Indicator | steam engine indicators | |
| 767,385 | Aug. 16, 1904 | A.B. Calkins | Veneer-sawing machinery | veneer machines | |
| 797,554 | Aug. 22, 1905 | A.B. Calkins | Jig-saw | scrollsaws | |